1720000

素因数分解:

$2^6\times 5^4\times {\mathrm{43}}^1$

素因数の和:75

約数の個数: 70

約数和(自身を含む): 4364228

約数和(自身を除く): 2644228

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 43, 50, 64, 80, 86, 100, 125, 160, 172, 200, 215, 250, 320, 344, 400, 430, 500, 625, 688, 800, 860, 1000, 1075, 1250, 1376, 1600, 1720, 2000, 2150, 2500, 2752, 3440, 4000, 4300, 5000, 5375, 6880, 8000, 8600, 10000, 10750, 13760, 17200, 20000, 21500, 26875, 34400, 40000, 43000, 53750, 68800, 86000, 107500, 172000, 215000, 344000, 430000, 860000, 1720000]

約数ペア:

[(1, 1720000), (2, 860000), (4, 430000), (5, 344000), (8, 215000), (10, 172000), (16, 107500), (20, 86000), (25, 68800), (32, 53750), (40, 43000), (43, 40000), (50, 34400), (64, 26875), (80, 21500), (86, 20000), (100, 17200), (125, 13760), (160, 10750), (172, 10000), (200, 8600), (215, 8000), (250, 6880), (320, 5375), (344, 5000), (400, 4300), (430, 4000), (500, 3440), (625, 2752), (688, 2500), (800, 2150), (860, 2000), (1000, 1720), (1075, 1600), (1250, 1376)]